Annual report pursuant to Section 13 and 15(d)

Other Intangible Assets - Additional Information (Detail)

v2.4.0.8
Other Intangible Assets - Additional Information (Detail) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Goodwill And Intangible Assets Disclosure [Abstract]      
Weighted-average amortization period 15 years 4 months 24 days    
Total amortization expense for other intangible assets $ 164,000 $ 198,000 $ 700,000
Intangible asset impairment charges $ 0 $ 0